Autel OBD2 Scanner Reset Codes Now Won’t Read Codes: Troubleshooting Guide

Your Autel OBD2 scanner was working fine, you reset the codes, and now it won’t read codes. Frustrating, right? Don’t worry, you’re not alone. This is a surprisingly common issue, and in most cases, it’s an easy fix. This guide will walk you through the most likely culprits and get you back to diagnosing your car in no time.

Understanding the Issue: Why Won’t My Autel Scanner Read Codes?

Before we dive into solutions, it’s helpful to understand why your Autel scanner might be acting up after a code reset. Here are the most common reasons:

• Loose OBD2 Connection: The most basic, yet often overlooked, reason is a loose connection between your scanner and the vehicle’s OBD2 port.
• Blown Fuse: Resetting codes can sometimes cause a power surge, potentially blowing a fuse related to the OBD2 port or the scanner itself.
• Protocol Issues: Cars use different communication protocols, and your scanner needs to “speak” the right language. Sometimes, resetting codes can confuse the scanner, causing it to default to an incompatible protocol.
• Scanner Malfunction: In rare cases, there might be an internal problem with your Autel scanner.

Troubleshooting Your Autel OBD2 Scanner

Now that you know the potential causes, let’s go through a step-by-step troubleshooting process.

1. Check the Basics

• OBD2 Port Connection: Make sure the scanner is firmly plugged into the vehicle’s OBD2 port. It’s usually located under the dashboard on the driver’s side.
• Vehicle Ignition: Ensure the ignition is turned to the “On” position (engine off). This powers up the OBD2 system.

2. Inspect the Fuses

• Vehicle’s Fuse Box: Consult your vehicle’s owner’s manual to locate the fuse box and identify the fuse related to the OBD2 port. Check if it’s blown and replace it if necessary.
• Scanner’s Fuse (If Applicable): Some Autel scanners have internal fuses. Refer to your scanner’s manual to locate and check the fuse.

3. Reset the Scanner

Sometimes, a simple reset can resolve communication issues. Disconnect the scanner from the vehicle, turn off the ignition, and disconnect the scanner’s power source (if applicable). Wait a few minutes, then reconnect everything and try again.

4. Try a Different Vehicle

If possible, try connecting your Autel scanner to another vehicle. This helps you isolate whether the issue lies with the scanner itself or something specific to your car.

5. Update Scanner Firmware

Outdated firmware can sometimes cause compatibility issues. Visit Autel’s official website and check for the latest firmware version for your specific scanner model. Download and install any available updates.

6. Contact Autel Support

If you’ve gone through these steps and are still facing issues, it’s best to reach out to Autel’s customer support. They can provide further assistance or advise if your scanner requires professional diagnosis or repair.

Preventing Future Problems

Here are some tips to prevent this issue from recurring:

• Always Ensure a Secure Connection: Double-check the connection to the OBD2 port before every use.
• Use a High-Quality Scanner: Autel is known for quality, but investing in a reputable scanner model generally reduces the risk of problems.
• Keep Your Scanner Updated: Regularly check for and install firmware updates to ensure optimal performance and compatibility.

Frequently Asked Questions

Q: Could a dead car battery cause my Autel scanner to stop reading codes?

A: While a dead battery won’t directly cause this issue, it’s best to have a sufficiently charged battery before using your scanner to avoid any potential errors.

Q: My Autel scanner is finding codes but can’t clear them. What should I do?

A: This could indicate a more complex issue with your vehicle’s systems. You may need to consult a professional mechanic for further diagnosis and repair.

Need More Help?

Is your Autel scanner still giving you trouble? Don’t worry; we’re here to help. We have a team of car diagnostic experts ready to answer your questions.

Check out our in-depth reviews of the Autel MaxiLink ML629 OBD2 Scanner and the Autel MaxiLink ML619 CAN OBD2 Scanner Code Reader for more information and insights.

For personalized assistance, feel free to contact us via WhatsApp at +1(641)206-8880 or email us at [email protected]. We offer 24/7 customer support to help you get back on the road.